linux-kernel - Re: [RFC][PATCH 1/6] memcg: fix pre

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Date:	Thu, 11 Dec 2008 10:09:53 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Paul Menage <menage@...gle.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"lizf@...fujitsu.com" <lizf@...fujitsu.com>,
	"kosaki.motohiro@...fujitsu.com" <kosaki.motohiro@...fujitsu.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 1/6] memcg: fix pre_destory handler

On Wed, 10 Dec 2008 16:28:38 -0800
Paul Menage <menage@...gle.com> wrote:

> On Wed, Dec 10, 2008 at 4:25 PM, KAMEZAWA Hiroyuki
> <kamezawa.hiroyu@...fujitsu.com> wrote:
> >>
> >> Can you clarify what you mean by "rolling update of refcnts"?
> >>
> >  for(..i++)
> >        atomic_dec/inc( refcnt[i)
> >
> > But my first version of this patch did above. I can write it again easily.
> 
> I just sent out a small patch collection that had my version of
> css_tryget() in it - is that what you had in mind by "rolling update"?
> 
yes. but yours seems to be more robust than my version.
I'll try to use yours and prepare a patch for css_tryget() in memcg.
 
-Kame

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